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      <CYEndwmtFundGrp>
        <BeginningYearBalanceAmt>0</BeginningYearBalanceAmt>
        <ContributionsAmt>1670951</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>170696</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>47041</OtherExpendituresAmt>
        <AdministrativeExpensesAmt>5961</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>1788645</EndYearBalanceAmt>
      </CYEndwmtFundGrp>
      <BoardDesignatedBalanceEOYPct>1.00000</BoardDesignatedBalanceEOYPct>
      <EndowmentsHeldUnrelatedOrgInd>0</EndowmentsHeldUnrelatedOrgInd>
      <EndowmentsHeldRelatedOrgInd>0</EndowmentsHeldRelatedOrgInd>
      <TotalBookValueLandBuildingsAmt>0</TotalBookValueLandBuildingsAmt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART V, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>ENDOWMENT FUNDS WILL BE USED TO SUPPORT ORGANIZATION'S ACTIVITIES.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>~350 MEMBERS CONSISTING OF SCIENTISTS, RESEARCHERS, AND STUDENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL MEMBERS CAN VOTE FOR THE VICE PRESIDENT ELECTION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 990 IS PROVIDED TO PRESIDENT AND TREASURER FOR REVIEW BEFORE SIGNING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>ISNSCE HAS ADOPTED A FORMAL CONFLICT OF INTEREST POLICY. ANNUALLY EACH MEMBER OF THE BOARD SHALL SIGN A CONFLICT OF INTEREST STATEMENT IN COMPLIANCE OF THIS POLICY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>BYLAW (CONSTITUTION) OF THE SOCIETY IS AVAILABLE AT HTTPS://ISNSCE.ORG/ABOUT-2/CONSTITUTION/. CONFLICT OF INTEREST POLICY AND FINANCIAL STATEMENTS ARE NOT PUBLISHED.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>